Oakland County prosecutors rested their case this afternoon against a West Bloomfield grandmother accused of shooting her grandson to death in her condo, but not before presenting a horrifying scene of the teenager staggering through the home wounded as she continued to pull the trigger.

Jonathan Hoffman, 17, was bleeding on two different floors as his grandmother Sandra Layne, using her newly purchased Glock, pumped six hollow point bullets into him, a blood stain expert testified this afternoon.

Oakland County Chief Assistant Prosecutor Paul Walton, who showed large pictures of Sandra Layne’s Brookview Lane condo to the jury, led Michigan State Police expert Guy Nutter through the scene today. He asked about blood in the upstairs loft, blood on the main floor master bedroom, and blood in both bathrooms.

Many of the blood stains in the loft and the bedroom were large saturations. The walls had castoff stains and smudge marks that could have been caused by Hoffman as he moved about, Nutter said.

Prosecutors contend Layne, 75, shot Hoffman, 17, in his loft first and then went to the basement, where she left bloody footprints. Prosecutors believe Hoffman made his way down the stairs to the main floor, checked to see whether his grandmother’s car was still in the garage and went into the master bedroom to call for help. Layne shot him again there, prosecutors said.

Layne, wearing the same yellow sweater she’s had on every day of her trial, sat with her eyes closed as pictures of her home, filled with family pictures and house plants, cozy rugs and knickknacks, some of them covered in blood, were shown in Oakland County Circuit Court. She is charged with open murder in the May 18 shooting and could face life in prison if convicted.

Walton, noting a large blood stain on a tan chair next to the bed in the master bedroom, asked whether that would "be consistent with a person shot in the chest and the arm, and then leaning over for a period of time?”

Nutter said, “Yes it could.”

Additional blood stains on the floor and wall of a hallway leading from the master bedroom indicated a person was moving and bleeding heavily, Nutter testified. Swipes in those stains could indicate a second person was following the injured person. Prosecutors contend that was Layne following Hoffman back up into the loft where she shot him again.

Defense attorney Jerome Sabbota asked Nutter if it was possible that police officers, swarming the scene, created the swipes in the fresh blood. Nutter said the blood would have begun to dry, making that scenario less likely.

Sabbota has argued Layne, a retired school teacher and mother of five, was terrified of an increasingly violent teen with a drug problem. Hoffman was living with her to finish up high school after his parents, who were divorcing, moved to Arizona. And he has argued that Layne was fending off an assault when she shot him.

“You can’t rule out, based on your examination, that there was a struggle,” Sabbota said to Nutter. Nutter said he could not.

In earlier testimony, a weapons expert said the bullets used in the shooting were hollow pointed, jacketed 9 mm. Such bullets are particularly deadly, Michigan State Police forensics expert Shawn Kolonich told jurors. Those bullets are designed to stop an approaching enemy, and to “maximize damage on the target,” Kolonich said.

Layne bought the gun on April 27, three weeks before she killed Hoffman.

Sabbota has said he plans to put Layne on the stand, likely Wednesday or Thursday.